ScienceDaily: Strange Science News |
- Do bacteria age? Biologists discover the answer follows simple economics
- Python study may have implications for human heart health
- Insects are scared to death of fish
- Celestial compass obscured by urban light pollution for some nocturnal animals
- Through-the-nipple breast cancer therapy shows promise in early tests
- New drug targets revealed from giant parasitic worm genome sequence
- Antarctic killer whales may seek spa-like relief in the tropics
- New 'scarless' surgery takes out tumors through natural skull opening
| Do bacteria age? Biologists discover the answer follows simple economics Posted: 27 Oct 2011 12:02 PM PDT When a bacterial cell divides into two daughter cells and those two cells divide into four more daughters, then 8, then 16 and so on, the result, biologists have long assumed, is an eternally youthful population of bacteria. Bacteria, in other words, don't age -- at least not in the same way all other organisms do. But a study questions that longstanding paradigm. Researchers conclude that not only do bacteria age, but that their ability to age allows bacteria to improve the evolutionary fitness of their population by diversifying their reproductive investment between older and more youthful daughters.  |
| Python study may have implications for human heart health Posted: 27 Oct 2011 11:58 AM PDT A surprising new study shows that huge amounts of fatty acids circulating in the bloodstreams of feeding pythons promote healthy heart growth, results that may have implications for treating human heart disease.  |
| Insects are scared to death of fish Posted: 27 Oct 2011 09:52 AM PDT The mere presence of a predator causes enough stress to kill a dragonfly, even when the predator cannot actually get at its prey to eat it, say biologists. The scientists suggest that their findings could apply to all organisms facing any amount of stress, and that the experiment could be used as a model for future studies on the lethal effects of stress.  |
| Celestial compass obscured by urban light pollution for some nocturnal animals Posted: 27 Oct 2011 08:25 AM PDT Urban light pollution has been shown to reduce the visibility of not only the stars, but also of an important navigational signal for some nocturnal animals. During clear moonlit nights, a compass-like pattern of polarized light that is invisible to the human eye stretches across the sky. The nighttime skyglow over major cities renders this celestial compass unobservable over large areas, according to a new study.  |
| Through-the-nipple breast cancer therapy shows promise in early tests Posted: 26 Oct 2011 11:37 AM PDT Delivering anticancer drugs into breast ducts via the nipple is highly effective in animal models of early breast cancer, and has no major side effects in human patients, according to a new study. The results of the study are expected to lead to more advanced clinical trials of so-called intraductal treatment for early breast cancer.  |
| New drug targets revealed from giant parasitic worm genome sequence Posted: 26 Oct 2011 11:37 AM PDT Scientists have identified the genetic blueprint of the giant intestinal roundworm, Ascaris suum, revealing potential targets to control the devastating parasitic disease ascariasis, which affects more than one billion people in China, South East Asia, South America and parts of Africa, killing thousands of people annually and causing chronic effects in young children.  |
| Antarctic killer whales may seek spa-like relief in the tropics Posted: 26 Oct 2011 08:38 AM PDT In a new study, researchers offer a novel explanation for why a type of Antarctic killer whale performs a rapid migration to warmer tropical waters. One tagged Antarctic killer whale monitored by satellite traveled over 5,000 miles to visit the warm waters off southern Brazil before returning immediately to Antarctica just 42 days later. This was the first long distance migration ever reported for killer whales.  |
| New 'scarless' surgery takes out tumors through natural skull opening Posted: 26 Oct 2011 08:38 AM PDT A technique developed by surgeons is providing a new route to get to and remove tumors buried at the base of the skull: through the natural hole behind the molars, above the jawbone and beneath the cheekbone.  |
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